Directions: In the following sentence, five words are given in bold, out of which one or more words can be misspelt or inappropriate. Find the misspelt or inappropriate words. Mark 'no error' if all the words are correctly written.

The idea behind BTC Bot 2.0 Pro is to allow (A) the average person to cash in on the cryptocurrensy (B) boom which is still the most sterile(C) investment (D) of the 21st century, despite (E) what most people think.